Outrigger for mooring of boats

ABSTRACT

Boat mooring outrigger comprising a boom attachable perpendicularly to a quay, the end of the boom facing the quay having cross-stays extending at an angle to the boom and attachable to the quay, the cross-stays being detachably fitted to the boom by means of fastenings partially gripping around the boom and mating with the boom by means of a fixing device which, through the action of a locking device, fixes the position of the fastenings relative to the boom.

United States Patent 1191 Tellberg 1 June 18, 1974 [22] Filed:

[ 1 OUTRIGGER FOR MOORING OF BOATS [76] Inventor: Klas Olof Tellberg, Rattarbacken 6,

Saltsjo-Duvnas, Sweden Jan. 28, 1972 [21] Appl. No.: 221,578

[30] Foreign Application Priority Data Jan. 29, 1971 Sweden 1121/71 [52] US. Cl. 114/230, 24/81 CC, 248/226 R [51] Int. Cl B63b 21/00 [58] Field of Search 114/230, 231, 219, .5 R;

287/54 A, 54 B, 54 C; 248/226 R; 211/177, 182; 24/73 HH, 81 C; 9/15, 16, 400

[56] References Cited UNITED STATES PATENTS 1,934,396 11/1933 Bales 24/81 cc 2,456,839 12/1948 Princell 114/230 2,799,907 7/1957 Kohtz 24/81 CC 3,177,035 4/1965 Halstrick 248/226 R 3,659,545 5/1972 Hedman 114/230 Primary ExaminerLloyd L. King Assistant Eraminer-Randolph A. Reese Attorney, Agent, or Firm-Sughnue, Rothwell, Mion, Zinn & Macpeak 157 ABSTRACT Boat mooring outrigger comprising a boom attachable perpendicularly to a quay, the end of the boom facing the quay having cross-stays extending at an angle to the boom and attachable to the quay, the cross-stays being detachably fitted to the boom by means of fastenings partially gripping around the boom and mating with the boom by means of a fixing device which, through the action of a locking device, fixes the position .of the fastenings relative to the boom.

4 Claims, 2 Drawing Figures s 1 OUTMGGER FOR MOORING OF BOATS The invention relates to an outrigger for mooring of boats, comprising a boom attachable essentially perpendicularly to a jetty, quay or the like, the end of the boom facing the jetty or the like having at least one cross-stay extending at an angle to the boom and attachable to the jetty etc.

(Jutriggers of this kind are exposed to severe stresses during an on-shore breeze, as a result of which the outriggers are liable to break. The break usually occurs in the vicinity of the fastening points of the outriggers at the jetty or quay. For this reason the outriggers must have large dimensions, which has the disadvantage that they are awkward to handle, for example in conjunction with transport and attachment. From the transport aspect their large dimensions have a further disadvantage, namely that the outriggers are bulky and therefore expensive to transport.

The object of the present invention is to eliminate these disadvantages. The invention thus consists of an outrigger comprising a boom attachable essentially perpendicularly to a jetty, quay or the like, the end of the boom facing the jetty or the like having at least one elongated bracing member, or cross-stay, extending at an angle to the boom and attachable to the jetty or the like. The invention is chiefly characterized in that the cross-stay is detachably fitted to the boom by means of a fastening member which is shaped to fit snuggly around half or less of the boom, whereby a unity member is obtained, and to mate with the boom by means of a fixing device which, through the action of a locking device which presses the fastening against the boom, fixes the position of the fastening relative to the boom. As a result of this detachable fitting of the cross-stays to the boom for formation of an outrigger, the outrigger becomes very much simpler to handle in conjunction with transport and attachment. During transport the cross-stays are dismantled and laid along the boom, so that the outrigger takes up very much less space than if the cross-stays were rigidly attached to the boom. The transport costs are thus much lower; as they are partially based on the volume of the transported goods. For conventional outriggers of this type, the transport cost is especially unfavourable, as the volume is calculated on (maxlength) X (max.width) X (max.height).

A further advantage of an outrigger according to the invention is that the cross-stays can be exactly similarly shaped, on whichever side of the boom they are to be placed. Thus one can attach only one cross-stay to one side of the boom or one cross-stay to each side of the boom, the cross-stays in the latter case facing in such a way, that the fastening of one cross-stay grips around the boom chiefly from the upper side, while the fastening of the other cross-stay grips around the boom chiefly from the underside.

According to an advantageous further development of the invention, the fixing device consists of a pin affixed to the fastening and engaging in a recess in the boom. The advantage of this is that the pin is pressed against one edge of the recess when the fastening, under some torsion around the boom, is pressed against the latter under the influence of the locking device. To ensure. reliable fixation of the fastening to the boom, the pin should preferably have an increasing crosssectional area in the direction from the point of fixation in the fastening. It is especially desirable that both pin and recess in the boom should have a rectangular crosssection, which has the advantage that the abutment be tween the pin and the edge of the recess is obtained along a relatively lengthy area.

The boom may consist of a unitary elongated central member, but, according to an especially advantageous further development of the invention, the elongated central member is composed of two essentially parallel tubes joined to one another by connecting elements, preferably in the form of rectangular flat bars. The fastening consists in such case of a flat bar, one end of which is bent to an essentially semicylindrical section, the geometrical axis of which is transverse to the longitudinal direction of the flat bar and situated essentially in the plane of the plane part of the fastening. The

length of the cross-stays is so adjusted that, on attachment of the cross-stays to the boom, the fastenings are placed opposite one of the connecting elements joining together the parallel tubes. The locking devices may suitablyconsist of two bolts fitting into open holesboth inthe fastenings and in the connecting element. This ensures an extremely stable construction, and, for further strengthening of the fastening points, it is advisable to arrange supporting shoulders on the boom immediately outside the fastening'point for the cross-stay.

One embodiment of the invention will now be described with reference to the attached drawing, in which FIG. 1 shows a boat moored to an outrigger according to the invention and FIG. 2 a part of the outrigger showing the fastening 0f cross-stays to the boom of the outrigger.

In the embodiment of the invention shown in FIG. 1 an outrigger consists of two essentially parallel tubes 1,

2 and likewise two cross-stays 4, 5. At the inner end of the tubes 1, 2 there is a pivot bushing 3 designed to fasten the boom to hinges arranged on a jetty, quay or the like by means of a cotter not shown in the drawing. Correspondingly the cross-stays 4, 5 have pivot bushings 6, 7 designed similarly to be fastened to the jetty or the like. At the outer end of the: tubes 1, 2 they are supported by floating blocks 20 such as are disclosed in US. Pat. No. 3,659,545. The boat 21 is moored to the outrigger in any suitable manner, such as by lines 22 at the bow and stem thereof.

FIG. 2 shows more clearly how the cross-stays 4, 5 are fastened to tubes 1, 2 of the boom. Opposite a connecting element 17 extending between tubes 1, 2 there are recesses 15, 16 in tubes 1, 2. The connecting element 17 can be attached to the tubes 1, 2 by any suitable means, such as by welding, or it may simply be held in position by the bolts 8. These recesses are designed to take pins 13, 14 placed on fastenings for the cross-stays 4, 5. The fastenings are integrally connected to the cross-stays 4, 5 in any convenient manner for instance, by welding. Each of the fastenings consists of a flat bar with a plane section 18, 19 and an essentially semicylindrical portion 11, 12.

To permit attachment of the cross-stays 4, 5 to tubes 1, 2, the holes l5, 16 must be rather larger than the cross-sectional area of the pins 13, 14. For attachment of a cross-stay it is directed, and thus also its associated fastening, in such a way that the longitudinal direction of the pin forms anangle with the: centre line of the hole. As the cross-stays are shown in FIG. 2, the righthand cross-stay 4, on assembly and! disassembly, must be so turned that the plane section 18 of the fastening device slopes obliquely downwards. After the pin 14 has been inserted as far as possible into hole 16, the cross-stay 4 is turned so that the plane section 18 of the fastening is brought up against the connecting element 17. After the other cross-stay S has been correspondingly fitted to tube 1, bolts 8 are inserted throught holes in plane sections l8, 19 of the fastenings and the connecting element 17. By means of nuts the plane sections 18, 19 are then pressed towards one another, the semicylindrical parts ll, 12 being turned through a small angle round tubes 1, 2 so that pins l3, 14 will abut one of the edges of the recesses 15, 16. In this way the cross-stays 4 and are securely fixed in their positions, at the same time as an extra stiffening of the joint between the two tubes 1, 2 is obtained.

As in practice is has proved that very great forces may arise in the longitudinal direction of tubes 1, 2, and so in the longitudinal direction of the cross-stays 4, 5, it is advisable further to reinforce the point of attachment of the cross-stays 4, 5 by arranging supporting shoulders 9, on tubes 1, 2. These contribute to relief of the stresses on the pins 13, 14.

Although the invention has been described with reference to one of its embodiments, it can nevertheless be arbitrarily varied within the scope of the following claims.

What is claimed is:

1. In an outrigger boom assembly for the mooring of boats, the improvement comprising a detachable stay which on a first end is provided with a device such as a hinge for hinging the stay in a frame such as a jetty, and which on the other end is provided with a fastening member for clamping the stay to the boom in an inclined bracing direction in relation to the boom, said fastening member being shaped to fit snugly around half or less of the boom, whereby a unity member is obtained which, without any modification, can be clamped either to the left or to the right of the boom, which stay further comprises a pin affixed to the fastening member and adapted to engage a recess in the boom, said pin having an increasing cross-sectional area in the direction away from the point of fixation in the fastening member.

2. An outrigger boom assembly according to claim 1, in which said pin has a rectangular cross-section.

3. In an outrigger boom assembly according to claim 1, the further improvement whereby the boom is provided with a supporting shoulder located immediately adjacent to a position suitable for the fixing of the stay on the side thereof remote from the first end of the boom, whereby the supporting shoulder can, at least partially take up compressive forces exercised by the boom on the jetty.

4. In an outrigger boom for the mooring of boats, said outrigger boom having an elongated central member composed of two essentially parallel tubes joined to one another by connecting elements, the improvement comprising a stay adapted to be detachably connected to said elongated central member, said stay comprising:

1. an elongated bracing member;

2. means mounted on one end of said elongated bracing member for detachably connecting said elongated bracing member to a frame such as a jetty;

3. a fastening member integrally mounted on the other end of said elongated bracing member and extending therefrom at an angle thereto, said fastening member comprising a flat bar one end of which is planar and adapted to fit snugly against one side of one of said connecting elements and the other end of which is bent to an essentially semicylindrical section adapted to fit snugly around one of said essentially parallel tubes, said elongated bracing means being integrally connected to the outer surface of the semi-cylindrical section of said flat bar and extending therefrom in or parallel to the plane of the planar end thereof;

4. a pin integrally mounted on the inner surface of the semicylindrical section of said flat bar and adapted to engage a recess in said one of said essentially parallel tubes; and

5. means for detachably connecting the planar end of said flat bar to said one of said connecting elements. 

1. In an outrigger boom assembly for the mooring of boats, the improvement comprising a detachable stay which on a first end is provided with a device such as a hinge for hinging the stay in a frame such as a jetty, and which on the other end is provided with a fastening member for clamping the stay to the boom in an inclined bracing direction in relation to the boom, said fastening member being shaped to fit snugly around half or less of the boom, whereby a unity member is obtained which, without any modification, can be clamped either to the left or to the right of the boom, which stay further comprises a pin affixed to the fastening member and adapted to engage a recess in the boom, said pin having an increasing cross-sectional area in the direction away from the point of fixation in the fastening member.
 2. An outrigger boom assembly according to claim 1, in which said pin has a rectangular cross-section.
 2. means mounted on one end of said elongated bracing member for detachably connecting said elongated bracing member to a frame such as a jetty;
 3. a fastening member integrally mounted on the other end of said elongated bracing member and extending therefrom at an angle thereto, said fastening member comprising a flat bar one end of which is planar and adapted to fit snugly against one side of one of said connecting elements and the other end of which is bent to an essentially semicylindrical section adapted to fit snugly around one of said essentially parallel tubes, said elongated bracing means being integrally connected to the outer surface of the semi-cylindrical section of said flat bar and extending therefrom in or parallel to the plane of the planar end thereof;
 3. In an outrigger boom assembly according to claim 1, the further improvement whereby the boom is provided with a supporting shoulder located immediately adjacent to a position suitable for the fixing of the stay on the side thereof remote from the first end of the boom, whereby the supporting shoulder can, at least partially take up compressive forces exercised by the boom on the jetty.
 4. In an outrigger boom for the mooring of boats, said outrigger boom having an elongated central member composed of two essentially parallel tubes joined to one another by connecting elements, the improvement comprising a stay adapted to be detachably connected to said elongated central member, said stay comprising:
 4. a pin integrally mounted on the inner surface of the semicylindrical section of said flat bar and adapted to engage a recess in said one of said essentially parallel tubes; and
 5. means for detachably connecting the planar end of said flat bar to said one of said connecting elements. 